Heating stove and air feeding means therefor



HEATING STOVE AND AIR FEEDING MEANS THEREFOR Filed Oct. 20, 1944 4Sheets-Sheet 1 Inventor JOHN A DOA/v,

By @Mddih (ma WW Ma Aug. 16, 1949.

Filed Oct. 20, 1944 J. A. DOAN 2,479,479

HEATING STOVE AND AIR FEEDING MEANS THEREFOR v 4 Sheets-Sheet 2 Inventor JOHN A. DOA/v,

By 3mm Mid WW m Aug. 16, 1949. J. A. DOAN HEATING STOVE AND AIR FEEDINGMEANS THEREFOR Filed Oct. 20, 1944 4 Sheets-Sheet 3 min away Em Aug. 16,1949. J. A/DOAN 2,479,479

I HEATING STOVE AND AIR FEEDING MEANS THEREFOR Filed Oct. 20, 1944 4Sheets-Sheet 4 Inventor z/UHN ,4. DOA/v,

Patented Aug. 16, 1949 UNITED STATES PATENT "OFFICE BEKTING STOVE ANDAI'R'FEEDING THEREFOR John AJDoan, 'St..Louis, Mo. I Application-OctoberL20, 1944, Seria'I'No. 559554! 2 Claims. (Cl. ,126-.-7.-7

This invention .;re1ai65 to a heating @unit, and more particularly tosuchaunit as astoveadapted for the heating pf a room or-the like.

A primary object of this invention is .to provide an improvedstove.with:me.ans whereby the draft of the same is forced bynatural .thermalcurrents to pass over the top of the fire ibed, rather than through 'thesame, from the bottom, as is conventional practice.

An additional 'ob'i'ect'df this "invention is to pro vide such a stovewithmeans .forpre-heating the air utilized for combustion prior to itscontact and mixture with the gases of combustion of the flre bed,whereby to insure :a more eflic'ient combustion, .and resultant increaseof heat conveyed to the area to be heated, rather than up the chimney orflue of the stove.

Still another object of this Ilnvention .is to ,provide such a unit sodesigned as to more nearly complete the combustion of the fuel utilized"therein, thus reducing the ash .content.

Still another object of this 'invention'is to provide a stove sodesigned as to omit controllable drafts below the fire bed, the draftsbeing wholly controlled by the upper draft of the stove.

Still another object is to provide a stove which will be sturdy anddurable in construction, reliable and eflicient in operation, andrelatively simple and inexpensive to manufacture and install.

Other objects reside in the combinations of 2 elements, arrangements ofparts, and features of ccn-"trvction, all as will be more fully pointedout hereinafter, and shown in the accompanying drawings, wherein thereis disclosed a preferred embodiment of this inventive concept.

In the drawings:

Figure l is a front elevational view of one form of stove embodyingfeatures of this invention.

Figure 2 is a side elevational view of the stove shown in Figure 1.

Figure 3 is an enlarged sectional view taken substantially along theline 3-3 of Figure 1, as viewed in the direction indicated by thearrows.

Figure 4 is an enlarged sectional view taken substantially along theline 4-4 of Figure 2, as viewed in the direction indicated by thearrows, and

Figure 5 is an enlarged sectional view taken substantially along theline 55 of Figure 2, as viewed in the direction indicated by the arrows.

Like reference numerals refer to like parts throughout the several viewsof the drawings.

Having reference now to the drawings, there is e a ly indi ated at I" a5'99"? m y meterablyconstmcted nfisteeLiorthe'ilike, and beingcomprisedcofzside walls forming an oval-shaped .body portion, -'a bottom1:2 zandia top 13.

Positioned interior-1y :of the body :wall H :is a flange "14, securedthereto inanyidesired manner, upon which is adapted to rest :a :grate I5. surrounding the interior-10f the body above the grate 11:5 andextending a substantial idistance thereabove is a :shell :Hi forming zaninner wall (entirely surrounding the :combustion :chamber.

Positioned in the stove body below grate I5 is *anas'h receptacle l'l,:adaptedito extendiforwardly intoarectangular section 1:8 :(see .Fig.5a of the stove body, which portion 18 is Provided with a door 19hinged, as at 10, and provided with a latch 2|, adapted to permit theremoval of the ash receptacle when :the same :is filled.

The stove 'bndy :iszadaptad vto be supported on legs 22, :or "the like.

Positioned above the upper extremity of inner wall I6 are twoductsnriairyentfi 215. which may be integral with the stove body, orsuitably secured thereto in any desired manner, and which extend frominlets 26 suitably positioned at spaced points on the front of the stoveto outlets 21 positioned adjacent the rear of the stove, and terminatingin downwardly turned elbows 29 (see Fi 4).

The inlets of the ducts 26 comprise apertures having bars 30, or thelike, positioned thereacross, which bars contain threaded aperturesadapted to be engaged by the threads of bolts 3| (see Fig. 5) suitablysecured to circular damper members 32 provided with handles 33. Thus, itwill be seen that rotation of the handles 33, through the coaction ofthe bolts 3| and their associated threaded apertures, serves to open orclose the inlets 26 of the members 25, the quantity of air admittedthereto being varied in accordance with the spacing of the dampers 32from the inlets.

The outlets 21 are spaced a substantial distance apart, beneath anarcuate baffle 35 closing the rear portion of the stove body Hi, andbeing positioned therebelow, a second vertical bafiie 36 beingpositioned at a mid-point thereof and extending to the top of the stove(see Figs. 3 and 4). A flange 31 surrounds an aperture 38 in the rear.of the stove body above the bailie 35, and connects with a flue oroutlet 39.

A second flange 4|] surrounds an aperture or opening 4| on the top ofthe stove l3, in front of the bafile 35, which aperture provides a meansfor inserting fuel into the stove. A cover 42 provided with a flange 43of less diameter than the flange 40, and having a handle 44, is adaptedsecurely to close the opening ll when the use of the same for insertionof fuel into the structure is not necessary.

Now, from the foregoing the operation of the device should be readilyunderstandable. Fuel is positioned on grate l5, and ignited in anysuitable manner, and the drafts 32 adjusted to open position. The air isthen sucked inwardly through inlets 26, air ducts 25 and pass outwardlythrough outlets 21 in a downward direction. As the air passes over thecombustion chamber and the fire therein, it is pro-heated to arelatively great extent, in such manner that when it emerges through theoutlets 21, it readily ignites when mixed with the gases of combustionemanating from the fire. The draft then passes over the fire bed,outwardly and upwardly over the bafile 35 and around the sides of thebafile 36, finally escaping through the aperture 38 to the flue 39. Bythis method, and due to the fact that the air is heated to a burningstage before it is passed to the fuel bed, the fuel is caused to burndownwardly instead of upwardly. Under the reverse conditions of burningfuel, that is, with an under draft, the gases and smoke from the fuelare drawn upwardly and forced out of the chimney unburned, thus causinga considerable waste of fuel, as a large percentage of the heat from thefuel is contained in the smoke and gases. By the instant method, it willbe seen that the air is circulated downwardly through the fuel, adjacentthe inlets, and finally upwardly therethrough toward the front or coolerportion of the fire bed, thus effecting a relatively greater combustionof the fuel contained in the stove.

From the foregoing it will now be seen that there is herein provided anapparatus accomplishing all the objects of thi'sinvention and others,including'many advantages of practical utility and commercialimportance.

As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiment hereinbefore shown anddescribed, it is to be understood that all matter herein is to beinterpreted merely as illustrative and not in a limiting sense.

I claim:

1. A stove comprising a body, a grate in said body, a sheet metal liningin said body spaced equidistantly from the walls thereof and havingintegral upper and lower flanges engaging said body to provide a deadair space between said lining and body, said lining positioned abovesaid grate forming the walls of a combustion chamber, an outlet forcombustion products in the top of said body, a horizontal bafileextending between and being joined to opposite sides of said bodybeneath said outlet, a vertical bafiie medially of the front edge ofsaid horizontal baffle and engaging said top, and air inlet conduitsextending above said lining and about the walls of said body, saidconduits having discharge openings beneath said horizontal bafile anddirected downwardly toward said grate.

2. The combination of claim 1 wherein said horizontal bafile is concaveddownwardly from its longitudinal medial line.

JOHN A. DOAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

